Common Name(s): Pentaerythrityl trioleate,pentaerythrityl trioleate,pentaerythrityl ester,tetrafunctional polyol emollient
CAS Number: N/a
DESCRIPTION
What It Does: Provides fluid emolliency retaining mobility from three unsaturated oleic chains with the pentaerythrityl backbone's quaternary carbon centre providing exceptional oxidative stability โ the neopentyl architecture sterically protecting ester bonds from hydrolysis and oxidation.
Why It's Used: Pentaerythrityl trioleate is selected for the pentaerythrityl skeleton's oxidative stability combined with c18:1 oleic (tri-ester) emolliency โ the quaternary carbon centre prevents beta-hydrogen elimination, making pentaerythrityl esters among the most stable emollients in demanding formulation environments.
How It Works: Pentaerythrityl quaternary carbon: no beta-h โ elimination impossible โ ester bond stability; c18:1 oleic (tri-ester) chains โ fluid emolliency retaining mobility from three unsaturated oleic chains; four ester positions โ structured branched molecular architecture.
Typically Found In: Premium emollient,long-wear formulas,high-temperature stable
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Barrier sealing,softening
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30%
SOURCING & ETHICS
Vegan Status: Conditional - supplier confirmation required
Halal Status: Unverified - supplier confirmation required
Source Notes: Plant-derived, synthetic or animal-derived. verify source. [audit 2026-07-29 rev2: the record's own source_notes does not assert a non-animal origin, or instructs the reader to verify with the supplier; "yes" asserts knowledge the record does not hold. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low; formulation-dependent
Sensitivity Concerns: Non-irritating.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Humectants,ceramides,actives as carrier
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Pentaerythrityl esters are the standard for high-temperature-stable emollients โ the quaternary carbon architecture provides oxidation resistance at processing temperatures where conventional esters degrade.
Last Verified: 2026-03-22
Primary Sources: Cosing database,pentaerythrityl trioleate pentaerythrityl ester emollient review